With the more electric aircraft trend, hydraulic actuators are increasingly replaced by electric actuators and more electrical systems (actuators, generators, power converters) are present on board. These electrical components can be source of electromagnetic noise issues.
The propulsion itself is electrified in Unmanned Aerial Systems (UAS) or in Distributed Electrical Propulsion (DEP) airplane concepts such as electric Vertical Take Off and Landing (eVTOL) systems. High power electric motors are also foreseen in hybrid electric aircraft or full electric aircrafts.
These electrical systems can be placed close to plane passengers, resulting in unpleasant acoustic noise. The electric propulsion of drones can also be a significant source of airborne noise disturbances.
Electromagnetic vibrations can also lead to additional electromechanical and structural fatigue. To maximize comfort and reliability it is therefore important to identify and lower noise and vibration sources in these electrical systems, including
- drone, UAS and DEP / eVTOL electric propulsion motors (often outrunners)
- electric propulsion motors of hybrid or full electric aircrafts
- on-board electrical generators
- spoiler, aileron, elevator, rudder actuators
- landing gear actuators (electric assisted brakes)
Manatee simulation software allows to control the noise level of these components during their whole development cycle, from early design stage to system-level detailed design stage, including specialized e-NVH analysis and mitigation tools.
Complementary to Manatee, EOMYS Engineering can characterize vibro-acoustic issues with advanced electrical, vibration, acoustic and sound quality measurements, and implement suitable electrical, control or mechanical solutions. Regular technical trainings on e-NVH are also provided for electrical engineers, mechanical engineers, acoustic engineers and NVH test engineers.